First make sure that all dependencies are installed:
$ cabal install --only-dependencies --enable-tests
Just run
$ cabal test
and return code will indicate success or failure. However, you won't get nice test output.
If you want nice output you can use runhaskell:
$ runhaskell -isrc -itest test/Spec.hs
Alternatively, you can build and run the test suite manually:
$ cabal configure --enable-tests --disable-optimization && cabal build && ./dist/build/spec/spec
The fastest way to run your specs is with ghci. Make sure that .ghci is
only writeable by you:
$ chmod go-w .ghci
Then you can run the specs with:
$ ghci test/Spec.hs
*Main> :main
After modifying code use:
*Main> :reload
*Main> :main
(note that the :reload will be much faster than loading the code initially,
this makes a big difference for larger projects)
To use runhaskell or ghci with Cabal sandboxes, run it with cabal exec:
$ cabal exec ghci test/Spec.hs
*Main> :main
$ cabal exec -- runhaskell -isrc -itest test/Spec.hs
To use stack to run your tests, you can simply run:
$ stack setup && stack test